Patents by Inventor Marcel Paris

Marcel Paris has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Devise for the measurement of mechanical vibrations
    Patent number: 3994155
    Abstract: A vibrating mass consisting of an electrically conductive liquid is capable of alternate motion in two opposite directions within a narrowed section of a leak-tight vessel placed in a medium in which vibrations are to be measured. The speed of motion of the conductive liquid within the narrowed section generates a voltage which is proportional to the frequency and amplitude of the mechanical vibrations.
    Type: Grant
    Filed: March 13, 1975
    Date of Patent: November 30, 1976
    Assignee: Commissariat a l'Energie Atomique
    Inventors: Marcel Paris, Serge Poinsot
  • Probe for measuring the level of a liquid
    Patent number: 3948100
    Abstract: A probe of the mutual inductance type with a linear response which is independent of temperature comprises a rigid support, two insulated cables disposed in interengaged relation and wound on the support, means for supplying one of the cables C.sub.1 with alternating current having constant amplitude and frequency, means for measuring the voltage between the two extremities of the second cable C.sub.2. A single resistor R is placed between the extremities of the cable C.sub.2, the resistance value of the resistor and the value of the frequency f being determined so as to ensure that the variations in voltage measured between the extremities of the cable C.sub.2 are reduced to zero in respect of any given level of liquid outside the probe.
    Type: Grant
    Filed: September 26, 1974
    Date of Patent: April 6, 1976
    Assignee: Commissariat a l'Energie Atomique
    Inventors: Marcel Paris, Serge Poinsot